Snakes on a Plane (2006)

Factual error: One of the subplots involves a young boy ("Tommy") who is bitten by a cobra and the attempts to save his life. When they are working on his arm, it is horribly swollen & filled with fluid which they drain by cutting open his arm. Cobras secrete a neurotoxic venom which attacks the nervous system. It would not cause noticeable swelling at the bite site. The symptoms Tommy has would indicate a bite from a snake which secretes a hemotoxic venom (such as a rattlesnake), which attacks the blood stream & tissues, causing swelling.

Neville Flynn: Enough is enough! I have had it with these motherfucking snakes on this motherfucking plane!

Trivia: The poster for this movie features two snakes wrapped around a plane in a double helix style, with the film title across the middle, However some posters feature the same snakes/planes but with the title underneath. Take a closer look at this second type of poster and match each snake's head to its tail. if you match the right snaked head to the left tail the other snake head doesn't match up to the tail. Try this in any combination you like, ie. left head/left tail or right head/left tail. You will always be left with a head not matching a tail.

Question: Why did the businessman think he was going to get to his meeting late since first class was closed?